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Old 02-13-2015, 03:12 PM   #11
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Hi, I personaly added a little more on my 325RES, and AC volt/amp meter. Nice to monitor current draw in a camp site where they have 30Amp breaker.
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Old 02-13-2015, 11:13 PM   #12
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Quote:
Originally Posted by TURBS View Post
Adding an amp meter can be expensive even buying a cheap China bomb.
A shunt is required in the 100 amp range to be safe.
A better idea is a complete battery monitoring system that can actually tell you amps, REAL state of charge, present usage, hours remaining at present usage, parasitic loads, loads for each item used etc.
About $160 includng shunt.
Victronix and Trimetric make them as does Xantrex at a higher price point for the same performance.
Needed if you boondock...not needed if you remain plugged in. Used one on my sailboat off the grid with solar, wind and genny for a number of years. My favorite and most used instrument other than the GPS!
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Old 02-13-2015, 11:45 PM   #13
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Another good idea,but not a new one!I had digital ro volt/amp gauges on the Kenworth Camper and on the Merhow LQ horse trailer as well. I just havent decided where to put them on the new one,and its snowing 6" tonight with 45 mph wind,so thats another project for march.
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Old 02-14-2015, 01:14 PM   #14
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Just another approach with meter, push button & 3 position rotary switch. With wiring going to BCC posts, coach & chassis batteries can be checked under load/no load, charging, converter output etc.

see below for schematic
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Old 02-15-2015, 07:07 AM   #15
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Originally Posted by Malc View Post
Has anyone thought about installing an amp meter, this will show the draw on the battery and also the charging rate.
I saw one in operation on a sailboat and it was very effictive
Here is a meter that measures amperes both in and out of a battery (battery bank) to the .01 of an ampere. Bogart Engineering TM-2020 TriMetric Meter Battery Monitor I used the 100 amp shunt for our 5th wheel, but a 500 amp shunt is available. I would think 100 amp would be adequate unless you include the starting circuit in a motorhome. The most I ever saw displayed was 60 amp when our converter/charger first started charging 50% depleted batteries (two).
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Old 02-15-2015, 08:08 AM   #16
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Come on one of you guys- post an ebay link to the digital volt meter!

-never mind- just search for digital voltmeter

Rats! Clicked too soon. I paid a whopping $1.91 and I could have gotten
it for a measly $1.45
note- these are shipped direct from China so will usually take about 4-6 weeks
to arrive via USPS. With any luck it will be warn enough by the time I get it
to actually enjoy being out there tinkering in the trailer.
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